Folding door



May 1, 1945. CQRSQ 2,374,925

FOLDING DOOR Original Filed- Dec. 4. 1941 s Sheets-Sheet 1 FIG. I

INVENTOR f. S. CORSO A TTORNEV May 1, 1945. s CQRSQ 2,374,925

FOLDING noon Original Filed Dec. 4, 1941 3 Sheets-Sheet 2 I64 5 I r52 5/\ Z 5 5 5551 I 7;:\ +56 3 I I 54 4 0P4 --RM FIG. 6

in I on {i INVENmR E S. C ORSO ATTORNEY May 1, 1945. s CQRSQ 2,374,925

FOLDING noon Original Filed Dec. 4, 1941 :5 Sheets-Sheet 3 FIG. 7 7 EB INVENTOR f? S. CORSO a :9 7(MMM A T TOR/ V more. particularly to Patented May 1, 194.5

UNI-TED". stares [PATENT fol-Flea Y Original ap l cation December 4, 1041, semi No. 421,581. Divided and this applioation.lnly 13,

- 1943, SerialYNo. 594,455

- Tlus invention relates to telephone booths and such booths. 1

' this invention, when usedas, for example,v in

a folding door' for use connection with a telephone booth, may comprise It is a-division of my pending application filed December 4, 1941, Serial N0. 421,561.

The door 'of this invention is formed when I used in connection with telephone booths, for

example, of preferably two folding sections each section constructed of two metallic plates havtwo folding-sections FBI and F82 which are pivoted to each other as by a so-called piano hinge 50, the flap LI and L2 of which. are secured to chamfered portions of the sections so as to permit relative movement oi! the sections when assembled to an angle of substantially 180 degrees, 2 that is, from unfolded position shown in Figs. 1, 2am! I to folded position shown in Fig. 6.

in flatwise relation, form a mounting frame for a glass plate and portions for receiving a flap of a piano hinge and dovetail joint elements for receiving means in the form of a rubber cushion or other non-metallic material, the cushion in each section thus formed serving'in coopera-- adjacent the hinged point of the door sections serves as a bumper against one of the walls of the booth for arresting the movement of the folding door toward its folded position and an airseal at the pivot of the piano hinge of the sections.

Other novel features and advantages of this invention will appear from the following description and by the claims appended thereto, reference being bad to the accompanying drawings in which:

Fig. 1 is a front elevation of a telephone booth equ pped with the folding door of this invention:

Fig. 2 is an end view/of the door partly in horizontal section taken on line 2--2 of Fig. 1 revolved clockwise 90 degrees;

Fig. 2A is a partial view showing a portion of the top disposed end of a section of the door.

Fig. 3 is a vertical section taken on line 3-3 of Fig.2;

Fig. 4 is a partial view shown in section taken on line 4-5 of Fig. 2A;

Each folding section consists of two flatwise interengagingplates 5| and 52, best seen in Figs.

,2 and 5, the 'plate 5| having a rectangularly shaped opening OP bounded by a peripherially disposed rim 56, interfitting with the ed es of flanges Fl, F2, F3 and F4 stamped from plate 52 in a manner to form, in cooperationwith the peripheral rim 58 of plate", a frame for receiving a glass plate 53, best seen in Figs. 1, 2, v3 and 7. The glass plate 53 of each folding section is heldin adjusted position in the frame thus formed by a perlpheral rectangular rim 5! e of U-shaped cross-section secured to the flanges Fl, F2, F3 and F4 as by a number of similar screws 55 engaging a reenforcing metallic strip 55S'and abutting against one side of a soft rubber or other non-metallic moulding RM 01 U- shaped cross-section fitted over the peripheral edge of the glass plate 53, as shown in Figs. 2, 3 and '7,while the opposite side of moulding RM abuts against the rim 58 forming the rectangular opening OP of plate 5|. Plates 5| and 52 are held in assembled relation to each other by socalled spot welding along their rectangular registering portions at points'as OX, OXI and OX2 as shown in Figs. 2 and 3. The welds OX extend through the chamfered orbevelled portions bp of plates 5| and 52 to a reenforcing strip 51 Fig. 5 is a view showing the two plates of oneof the door sections before assembly;

Fig. 6 is a partial'view of the telephone booth shown with portions of the ceiling and roof cut away showing the door sections in .folded position and Fig. 7 is an assembly view-of the door sections showing one of the glass plates and its securing strip exploded from that door'section.

provided for receiving screwssuchas 58, serving for securing the flaps LI and L2 of the pian hinge 5|! to the door sections FSI and F82, the opposite ends ofthe door sections being closed by cover-like elements 59 shown in Figs. 2.8, 4 and '7 secured as by welding to the plate 5| and 52 forming the door sections FSI and F82.

The plates 5| and 52 of sections FSI and FS2 are provided along their longitudinal edges op-. .posite the piano hinge-with re istering portions which, when the two plates are in assembled re-' lation, mm a dovetail joint forreceiving simiwhen in position in the Joint a tubular cushion to serve as an air-seal between the door sections As shown in Figs. 1, 2, 6 and '7, the door of FSI and FS2.and the booth supports orcorner 2 as'raoas posts a and 21 upon the closing of the door thus controlling the operation of a lamp, not shown,

upon the closing and opening movement of the booth door as eflected under control of an inverted U-shaped guiding member M formed with the lower wall portion of casing element Cl andengaged by a slider member 64 pivoted on a bracket 85 welded as shown in Fig. 2A to the top end of the door section F82, while a handle 08 secured to a reenforcing bracket 10, best seen in Fig. 2, as by a number of screws It serves for moving the door in its closed or open position from the interior of the booth.

As shown in Figs. 2, 6 and 7 a moulded rubber a seal at the hinged point of dOOr sections Fsi and F82 upon the unfolding of the door and a cushion between the door sections and the right side wall 39 of the booth so as to prevent noise strip I0 is secured to door section FSI to form spaced parallel relation, one of said plates having a stamped rim forming a rectangular opening and a portion forming a dovetail joint element at one of its longitudinal edges and a bevel portion at its opposite longitudinal edge, the other of said plates having rectangularly disposed stamped flange portions extending at right angles to the plane of said plate and having bent portions fitting over the periphery of the rim of the first- 10 mentioned plate to form therewith a frame, the

second-mentioned plate having a laterally bent portion registering with the bevelled portion of the first-mentioned plate and a dovetail element at its opposite longitudinal edge, said rim and said flange portions cooperating to form a frame, a glass plate fitted in said frame, a rubber moulding fitted at the periphery of said glass platehaving one of its sides abutting against said rim, a metallic moulding for securing said glass plate to said frame, a hinge for said door sections having its flaps secured to the bevelled longitudinal edges of said plates, and a rubber moulding having portions at its longitudinal edges registering with said dovetail'elements and forming in cooperation with elements of the .booth an air-seal for preventing extraneous and the dama in of the enamel finish at the surface of this wall upon the folding movement of the door.

Doors constructed according to this invention for general use have been found to be convenient in operation, durable'and practically free from repair and up-keep.

What is claimed is:

1. A door for a telephone booth, said door comprising folding sections, each of said sections consisting of two metallic plates welded in flat- 4o 2. A door for a telephone booth, said door havmg a plurality of folding sections, each of said sections comprising two rectangularly shaped metallic plates welded to each other in flatwise sound reaching the interior of the booth.

3. A door for a telephone booth, said door comprising a plurality of folding sections, each of said sections consisting of two metallic plates, one of said plates having a stamped rim extending perpendicularly to one side thereof, the other of said plates having flanged portions bent at their free edge for registering with said stamped rim upon the assembly of said plates to form a rectangularly shaped frame, a glass plate mounted in said frame, said metallic plates having longitudinally disposed dovetail joint elements, a rubber moulding having its longitudinal edge formed with portions for engaging said dovetail joint elements to form by the medium of its elasticity a geometrical figure of circular tubular cross-section, said moulding serving as seals between the front corner posts of the booth and said door sections, the "plates of each of said door sections having portions forming a longitudinally bevelled edge opposite to said dovetail joint elements, a hinge secured to said bevelled edges for pivoting said door sections to each other and means for pivoting one of said door sections to a base and a support element of the ceiling of the booth.

FRANK 8. CORBO. 

